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In which case we should use ACB & MCCB in switch gears?

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In which case we should use ACB & MCCB in switch gears?

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  1. ACB: air circuit breaker

    MCCB: moulded case circuit breaker

    ACB uses air to quench the arc produced during making/breaking of contacts.

    MCCB is classified on the basis of size & rating,so a MCCB may be ACB.

    plz go this site for complete details

    http://scour.com/view/result/?URL=http:/...

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